Which mobile network company offers the best performance in Denver? According to the latest report, it's a two-way tie between Sprint and Verizon. According to mobile analytics firm RootMetrics, Verizon and Sprint are tied for "overall performance" in Denver, although Verizon does edge out Sprint in the numerical ratings by a 96.6-95.7 margin. At&T and T-Mobile tied for third in Denver in the latest report, according to RootMetrics. This is the third straight cycle that Sprint and Verizon have…